Test    Gamma Glutamyltransferase (GGT)
   Department    Clinical Biochemistry, Rotherham NHS Foundation Trust
   Comment    GGT is measured as part of LFT profile
   Sample type    Blood
   Sample tube    Serum (brown top) or lithium heparin plasma (orange top)
   
   Collection conditions    No restrictions
   Minimum volume    0.5 ml blood (100ul of serum absolute minimum)
   Reference ranges
   (adult)		    Male = 0 - 50 U/L
   Female = 0 - 33 U/L
   Reference ranges
   (paediatric)		    Neonate = up to 215 U/L
   Infant = up to 107 U/L
   Child = up to 50 U/L
   Author    Dr Robert Lord (Consultant)
   Date    17.11.09
   Interpretation    http://www.clinbiochem.info/labggt2.0.pdf